What we need is a Poketch, but here's the catch: it can cycle through the different things like C-Gear, Items Menu, PokeNav, Xtransceiver, etc. just by tapping a left or right arrow or cycle through a list (Customizable cycling system), then we have all we need right there on the bottom screen. But to get to Options, Save, etc. we need to either press X/Select or have that hidden away in a place on the PMS (Pokemon Moblie System). I also think it would be cool to be able to move Pokemon in the PC system using the PMS, but you can't Deposit/Withdraw without a PC, so you don't go to the E4 and be like "Hurr durr trololol i gotz new pokiminz an u dont lol".
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Or, a different idea, have like a mini-computer on our wrists that do all of the above except you have to open it's folder or file, and it will still have a Nav. menu so you can search for files. It's online features could be like that of computers: able to access the 'Internet', but more like the Nintendo Network or GTS and DW, etc. Really infinite possiblities. Minigames perhaps?